const int kAppTimePeriodic = 200; //定时器
const double kMin = 4; //每一个采样ms=
const double kperSecomd = 4 / 1000;
const double kminPeakTime = 0.4; //ms
const double kmaxPeakTime = 1.5; //ms

const int kPointKLength = 1000;
const int kWaveLengt = 100;
const double kWindowsShowLength = 1000;
const int kDetialShowLengh = 100;
